Paper widening machine



Jan- 4, 1955 G. H. BATHoN ETAL PAPER WIDENING MACHINE 3 Sheets-Sheet 1 Filed Sept. 6, 1952 HTTOBNE Y.

Jan. 4, 1955 G. H. BATHON ET AL PAPER WIDENING MACHINE 3 Sheets-Sheet 2 Filed Sept. 6, 1952 n n JNVENTORS. GEORGE Han/A RD BAT/fon.

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United States Patent O PAPER WIDENING MACHINE George Howard Bathon and Howard J. Whelan, Baltimore, Md., assignors, by mesne assignments, to lver United Filters Incorporated, Oakland, Calif., a corporationof Nevada Application September 6, 1952, Serial No. 308,216 1 Claim. (Cl. 154-42) This invention relates to paper manufacture and more particularly to a machine for increasing the width of manufactured paper indefinitely, and is an improvement over the paper widening machine shown in Patent Number 2,217,306.

In the method outlined in the above mentioned patent, provision was made for the first time for grinding the edges of two rolls of paper into reversed beveled faces by means of angularly disposed grinding wheels so that the rolls can be joined together into one homogeneous sheet and still retain approximately the normal thickness of a single sheet of paper at the point where they are joined together.

Although the method outlined in Patent Number 2,217,306 was an advance in the art of paper making and produced a nicely joined sheet, it was found that the Labrasive wheels used to grind the bevelled faces on the longitudinal edges of the sheets became clogged and required cleaning and trueing up, and the dust created by the grinding operation required the use of a suction system to carry the paper dust away from the abrasive wheels during the grinding operation.

It is an object of this invention to provide a machine capable of taking rolls of paper and joining them together lengthwise so that their width will be increased proportionally after being passed through the device.

Another object of the invention is to treat the longitudinal edges of the sheets to be joined so that they will be joined together in such manner that the joint will be practically unnoticeable and particularly without appreciably increasing the thickness of the paper at the joint.

A further object of this invention is to join the sheets of paper together and make the paper joint homogeneous so that they may be combined through the use of this process into a unitary roll and made as strong at the joint as in the general body of the original sheets.

Another object of the invention is to eliminate the use of abrasive wheels for bevelling the longitudinal edges of the sheets to be joined together and to avoid the use of dust-removing apparatus.

Another object of the present invention is to provide a machine capable of receiving a plurality of rolls of paper, treating the longitudinal webs to be joined together and pressing the webs firmly together to form a single roll of paper of increased width.

Other objects of the invention will become apparent as the invention is more fully set forth.

This invention differentiates from the one set forth in Patent Number 2,217,306 in that the inner longitudinal edge portions of the rolls of paper passed through the machine are pressed along their inner longitudinal edges to form so-called bevelled or feather edges without the use of abrasive rollers and the joint is made without appreciably increasing the thickness of the paper at the joint.

For a clearer understanding of the invention and the objects thereof, reference is made to the accompanying drawings wherein particular forms of the invention are indicated. The drawings when used in conjunction with the following description serve to illustrate the invention, its principles and its operation, while the claim indicates the scope thereof.

In the drawings:

Figure 1 is a plan view of the arrangement used in this embodiment for processing the longitudinal edge portions of webs of paper and joining them homogeneously to increase the width of the completed sheet;

Figure 2 is a sectional elevation taken along line 2 2 of Figure 1;

Figure 3 is a right hand end view of Figure l;

Figure 4 is a sectional View taken along line 4-4 of Figure 1;

Filgure 5 is a side elevation taken on line 5-5 of Figure Figure 6 is ure 1;

Figure 7 is a plan view of a modified arrangement for treating the edges of the sheets and joining them homogeneously and increasing the width of the sheet;

Figure 8 is a sectional elevation taken along line 8--8 of Figure 7; and

Figure 9 is a sectional view taken along line 9-9 of Figure 8. y

Similar reference characters refer to similar parts throughout the drawings.

In the view shown in Figures 1 and 2, the roll 1 carries a supply or web of paper 2 which is to be longitudinally combined to another length or web of paper 12 carried on another similar roll 11, mounted adjacent to it on the frame 9 of the machine. Each roll or web of paper to be joined has its longitudinal inward edge trimmed off straight by slitters 61, and wetted by rollers 24. The nished inward'longitudinal edges of the sheets are then bevelled oif to a feather edge by the forming wheels 5 and 15 respectively. The bevelling of the sheets 2 and 12 is accomplished when the trimmed longitudinal edges of the sheets are pressed against the bevel faces 4 and 14 in wheels 5 and 15 by the pressure rollers 10 and 20 so that they may be prepared for joining together homogeneously.

Moistening devices each comprising a trough 22 hold a wetting agent 23 that is fed to resilient rollers 24 for wetting the longitudinal edges of the sheets after they leave the slitters 61, and preferably before they reach the forming wheels 5 and 15. An adhesive trough 25 holds an adhesive 26 which is fed to the adhesive wheel 27 for distribution on the bevel face 3 of sheet 2 so that it may be combined with sheet 12 when pressed thereagainst by compression rollers 13. The compression rollers 13 are preferably heated by internal units 16 whereby pressing of the longitudinal edges of the sheets together is combined with drying of the wetted edges of the sheets and of the adhesive simultaneously. To speed the drying and the podlction of the machine, additional heaters 17 may be a de After the webs of paper are combined, the finished web or roll of paper 18 is carried on an axle 42 mounted on the frame 9 and rotated by the motor 41 as indicated.

The forming wheels 5 and 15 are similar and the details set out in Figure 4 of the drawings show their general construction. The motor 41 connected to the axle 42 provides the necessary power for rotating the members to give the webs or papers the desirable movements during treatment. A sprocket wheel 43 is mounted on the axle 42 and drives a chain 44 to rotate another sprocket wheel 45 and lower shaft 46 which supports and rotates the lower roller 13. A spur gear 48 secured to the shaft 46 rotates a spur gear 49 secured to upper shaft 47 to drive the upper roller 13. A sprocket wheel 50 mounted on the lower shaft 46 drives a chain 51 and sprocket wheel 52 mounted on a shaft 53 to rotate the pressure roller 20 and spur gear 54 mounted on the shaft 53. The spur gear 54 meshes with another spur gear 55 that drives the shaft 56 and rotates forming wheel 15. A sprocket wheel 57 driven by the opposite end of shaft 46 drives a chain 58 and a sprocket wheel 59 mounted on a shaft 60 on which is also mounted the forming roll 5. The shaft 60 is provided with a spur gear 62 that meshes with another spur gear 63 mounted on a shaft 64 and the pressure roll 10 carried thereby. The shaft 53 supports a sprocket a side elevation taken along line 6`6 of Figwheel 65 driving a chain 66 and a sprocket 67 mounted on .70 secured to a shaft 71. The slitters 61 are mounted on and rotated by shafts 68, 74, 71 and 77 and driven by gears 72, 73, 75 and 76. Although the various rolls, slitters, etc. are shown driven by sprocket wheels and chains, it is readily appreciated that other forms of drives could be used in the present invention.

In the modified form shown in Figures 7, 8 and 9, the rolls 1 and 11 carry the webs of paper 2 and 12 and are mounted on they frame 9, the slitters 61 and the resilient wetting rollers are all mounted and operated as described above. The forming rolls 5 and 15 and the pressure rolls 10` and 20 are eliminated. After the sheet 2 leaves the wetting rolls Z4 it passes over an idler roll 80 and then receives the adhesive 26 from the wheel 27. The sheet 2. then overlaps the longitudinal edge of sheet 1'2 and both areV tightly compressed by the rollers I3, which rollers squeeze the wetting liquid from the sheet as it passes therebetween. An` idler roller 31 supports the sheet 12 between the wetting rolls 24 and the compression rolls 13. The details of the various bearings used in applying pressure to the pressure rolls are not shown in detail because they are of conventional design. The chain 82 is longer than the chain 51 shown in Figure l and extends from the sprocket wheel 50 to the sprocket wheel 67 secured to the slitter shaft 68. The other sprocket wheels and gears used to drive the slitters in Figures l to 6 inclusive are the same. The motor 41, drive shaft 42, and receiving roll 18, are the sarne as shown in the previous figures.

While but two general forms of the invention are shown in the drawings and described in the specification, it is not desired to limit this application for patent to these particular forms as it will be appreciated that other forms of construction could be made that would use the same principles and come within the scope of the appended claim.

Having thus described the invention, what is claimed 1s:

In a machine for increasing the width of manufactured paper, the combination of superposed supply rolls supporting a plurality of rolls of paper, driving means for feeding said webs of paper along separate and spaced paths, means for softening the corresponding inward longitudinal edges of the webs while traveling along said paths, means engaging said Webs to form corresponding bevels on the softened edges thereof, said means comprising co-acting pairs of rollers one roller of one pair having a cylindrical periphery and the other roller of said pair which is also generally cylindrical in periphery having a bevelled circular face on its periphery to produce the aforesaid bevelled edges, means for applying adhesive to at least one ot the longitudinal bevelled edges of the webs, combined means for bringing the aforesaid longitudinal bevelled edges in juxtaposition in the sarne plane and for applying pressure to join the said edges together without appreciable increase in the thickness of the web at the joint, and means for rolling the single widened web of paper.

References Cited in the le of this patent UNITED STATES PATENTS 2,483,707 Magee Oct.. 4, 1949 

